You mentioned installing 98 and then upgrading to XP but you have a full version of XP Home and not an upgrade version. Are you wanting to know if you can install 98 and then upgrade to XP on the same partition and expect 98 to still be there to handle older programs? If so, that's not going to work. You have two options. You can use fdisk to delete all partitions from the drive and then create a primary partition for Win 98 using only part of the drive. Let 98 format and install itself. Use the XP CD to partition and format the remainder of the drive. You should now be presented with options at boot as to which OS to use. You might also consider just leaving your XP drive alone and get a second drive to install 98. You should be able to select the boot drive by entering the BIOS to do so. It's an extra step but keeps things a bit cleaner in my opinion.
I have Windows XP Full Home Edition on my computer and some programs (cd's) require either windows 95 or 98 in order to run. How do I completely uninstall my Windows XP Full Home Edition and then install windows 98 (with the recognition of windows 95) and then the upgrade to Windows XP? I have all of these cd's.